#B73839#B73839

#B73839 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.9% C 0.163 H 24.3°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX#B73839
RGBrgb(183, 56, 57)
HSLhsl(360, 53%, 47%)
HSVhsv(360, 69%, 72%)
CMYKcmyk(0%, 69.4%, 68.9%, 28.2%)
CIE-LABlab(43.05, 50.97, 28.91)
CIE-LCHlch(43.05, 58.60, 29.56°)
OKLaboklab(52.88% 0.149 0.0672)
OKLCHoklch(52.88% 0.163 24.3)
XYZxyz(21.6835, 13.1942, 5.2751)
Luminance0.1319 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B73839 #38B7B6
analogous
#B73878 #B73839 #B77738
triadic
#B73839 #39B738 #3839B7
tetradic
#B73839 #78B738 #38B7B6 #7738B7
square
#B73839 #78B738 #38B7B6 #7738B7
split-complementary
#B73839 #38B777 #3878B7
monochromatic
#591B1C #882A2A #B73839 #CE5E5F #DC8D8E

Accessibility & contrast

On white

5.77
#B73839 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.64
#B73839 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73839
5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B73839#FFFFFF#000000##FFFFFF
##B738391.005.773.645.77
#FFFFFF5.771.0021.001.00
#0000003.6421.001.0021.00
##FFFFFF5.771.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5B5438
Deuteranopia (green-blind)
#7B7035
Tritanopia (blue-blind)
#C9113A
Achromatopsia (no color)
#666666

Design tokens & code

CSS
--color: #b73839;
/* rgb */ color: rgb(183, 56, 57);
/* oklch */ color: oklch(52.9% 0.163 24.3);
Tailwind
colors: {
  custom: {
    50: '#d4776f',
    500: '#b73839',
    950: '#000000',
  },
}
SCSS
$custom: #b73839;
$custom-light: #d4776f;
$custom-dark: #000000;
JSON
{
  "hex": "#b73839",
  "rgb": {
    "r": 183,
    "g": 56,
    "b": 57
  },
  "hsl": {
    "h": 359.528,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52875,
    "c": 0.16349,
    "h": 24.3
  },
  "luminance": 0.13191
}

Semantic roles & 50–950 ramp

primary
#B73839
secondary
#84C7C6
accent
#DDDB4B
background
#FEF7F6
surface
#FCEEEC
border
#D5C9C7
text
#160907
muted
#847B7A

Preview Lab

Preview with #B73839

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#B73839 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva